package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        // TODO 需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /**
     * 新增员工
     * @param employeeDTO
     */
    @Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = Employee.builder()
                .idNumber(employeeDTO.getIdNumber())
                .username(employeeDTO.getUsername())
                .name(employeeDTO.getName())
                .password(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()))
                .status(StatusConstant.ENABLE)
                .sex(employeeDTO.getSex())
                .phone(employeeDTO.getPhone())
                //.createTime(LocalDateTime.now())
                //.updateTime(LocalDateTime.now())
                //.createUser(BaseContext.getCurrentId())
                //.updateUser(BaseContext.getCurrentId())
                .build();
        employeeMapper.insertEmployee(employee);
    }

    /**
     * 员工分页查询
     * @param pageQueryDTO
     * @return
     */
    @Override
    public PageResult pageEmployeeList(EmployeePageQueryDTO pageQueryDTO) {
        //计算起始页
        Integer start =(pageQueryDTO.getPage() - 1) * pageQueryDTO.getPageSize();

        //计算总条目数
        Long total = employeeMapper.getToal();

        //条件查询
        List<Employee> employeesList = employeeMapper.getByName(pageQueryDTO.getName());

        //封装查询结果
        PageResult pageResult = new PageResult(total,employeesList);

        return pageResult;

    }

    @Override
    public void updateEmployeeStatusById(Integer status, Long id) {
        Employee employee = Employee.builder()
                .id(id)
                .status(status)
                //.updateTime(LocalDateTime.now())
                //.updateUser(BaseContext.getCurrentId())
                .build();
        employeeMapper.update(employee);
    }

    @Override
    public Employee getById(Integer id) {
        Employee employee = employeeMapper.getById(id);
        employee.setPassword("*******");
        return employee;
    }

    @Override
    public void update(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        //employee.setUpdateTime(LocalDateTime.now());
        // employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(employee);
    }



}
